existentialcrisis.sh is a powerful API toolkit that you may use if you'd like to have an existential crisis.
The below tools should all be very helpful in triggering an existential crisis. They are used inadvertently by the author every day.
GET /api/v1/crisis/percentage?age=X X = your age (1-100)
GET /api/v1/crisis/saturday?age=X X = your age (1-100)
GET /api/v1/crisis/remember?age=X&years=Y X = your age (1-100) Y = number of years from now (1-1000)